I think the point wasn't that the men will have inherently male-favouring politics (although that may well be part of it as well), but rather that there should be essentially a 50-50 mix of men and women in politics in the first place.
Of course, this viewpoint depends entirely on the assumption that gender is a social construct and that the natural state of things would be to have exactly equal numbers of men and women interested and engaged in every aspect of all human activity (such as refuse collection and working on sewage farms for example). If you don't assume this then it suddenly stops being a problem if more men than women go into politics. Or sewage.
Of course, if women were actually being prevented from entering politics that would be a concern, but the fact that they tend to make up a not insignificant minority in most western democracies including leading major parties and even countries in some cases) would seem to indicate that this isn't the case. They clearly can (and do) make it into the highest levels of political office, so the patriarchy isn't really doing much of a good job of keeping them in their place.